/Engine/Source/Editor/UnrealEd/Public/ComponentVisualizer.h
virtual bool HandleInputDelta ( [FEditorViewportClient](API\Editor\UnrealEd\FEditorViewportClient) * ViewportClient, [FViewport](API\Runtime\Engine\FViewport) * Viewport, FVector & DeltaTranslate, FRotator & DeltaRotate, FVector & DeltaScale )